HELP! PLEASE! If you know how to balance chemical reactions, I need you!:(?

Question

Yeah, if you could do me the biggset favor and either explain HOW to balance chemical reactions, give me a site that explains(i cant find any) or maybe answer these?
'Write out the reaction and balance
1. Copper (II) Nitrate + Sodium hydroxide
2. Copper (II) Hydroxide + Heat
3. Copper (II) Oxide + Hydrochloric acid
4. Aluminum + Copper (II) Chloride
5. Aluminum + HYdrochloric acid'


I am so incredibly lost. Any help would be highly appreciated, please? :(

Answer 1

1. Copper (II) Nitrate + Sodium hydroxide
Precipitation reaction:
Cu(NO3)2(aq) + 2NaOH(aq) ==> 2NaNO3(aq) + Cu(OH)2(s)

2. Copper (II) Hydroxide + Heat
Dehydration: Cu(OH)2 + Heat ==> CuO + H2O

3. Copper (II) Oxide + Hydrochloric acid
Desolve in acid: CuO + 2HCl ==> CuCl2 + H2O

4. Aluminum + Copper (II) Chloride
Redox Reaction: 2Al + 3CuCl2 ==> 2AlCl3 + 3Cu

5. Aluminum + HYdrochloric acid'
Redox Reaction: 2Al + 6HCl ==> 2AlCl3 + 3H2(g)